Without watching that vid, it looks like one that was posted a while back, as far as i know Decaf made a couple posts and stated you couldn't remove clipping, because it just quiets down the clipping, leaving the waveform (?) unaffected. I wish I could find those threads, a lot of useful info in them.
everytime I used audacity to remove clipping it made the wave triangular or just all kinds of misshaped.... if you zoom in the see the individual sine wave you can see it